User terminal and radio communication method

ABSTRACT

A terminal is disclosed including a processor that, when an uplink shared channel is used to transmit a delivery acknowledgement signal (HARQ-ACK) and an uplink data (UL-SCH), controls a mapping of the delivery acknowledgement signal based on whether bundling is applied to the delivery acknowledgement signal and based on a number of bits of the delivery acknowledgement signal; and a transmitter that transmits the delivery acknowledgement signal and the uplink data. In other aspects, a radio communication method and a base station are also disclosed.

TECHNICAL FIELD

The present invention relates to a user terminal and radio communicationmethod in the next-generation mobile communication system.

BACKGROUND ART

In UMTS (Universal Mobile Telecommunications System) networks, for thepurpose of higher data rates, low delay and the like, Long TermEvolution (LTE) has been specified (Non-patent Document 1). Further, forthe purpose of wider bands and higher speed than LTE, successor systems(e.g., also referred to as LTE-A (LTE-Advanced), FRA (Future RadioAccess), 4G, 5G, 5G+(plus), NR (New RAT), LTE Rel.14, 15-, etc.) to LTEhave also been studied.

On uplink (UL) in the existing LTE system (e.g., LTE Rel.8-13),DFT-s-OFDM (Discrete Fourier Transform-Spread-Orthogonal FrequencyDivision Multiplexing) waveforms are supported. The DFT-s-OFDM waveformis a single-carrier waveform, and therefore, it is possible to preventthe Peak to Average Power Ratio (PAPR) from increasing.

Further, in the existing LTE system (e.g., LTE Rel.8-13), a userterminal transmits uplink control information (UCI), using a UL datachannel (e.g., PUSCH: Physical Uplink Shared Channel) and/or UL controlchannel (e.g., PUCCH: Physical Uplink Control Channel).

Transmission of the UCI is controlled, based on the presence or absenceof configuration of simultaneous PUSCH and PUCCH transmission, and thepresence or absence of scheduling of the PUSCH in TTI for transmittingthe UCI. Transmission of the UCI using the PUSCH is also called UCI onPUSCH.

PRIOR ART DOCUMENT Non-Patent Document

-   [Non-patent Document 1] 3GPP TS 36.300 V8.12.0 “Evolved Universal    Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial    Radio Access Network (E-UTRAN); Overall description; Stage 2    (Release 8)”, April, 2010

DISCLOSURE OF INVENTION Problems to be Solved by the Invention

In the future radio communication system (e.g., LTE Rel. 14 onward, 5G,NR or the like), it is studied to flexibly control scheduling of datachannels (including a DL data channel and/or UL data channel, alsosimply called data and the like). For example, it is studied to maketransmission timing and/or transmission period (hereinafter, alsodescribed as “transmission timing/transmission period”) of datachangeable (variable length) for each scheduling. Further, also fordelivery acknowledgement signal (also called HARQ-ACK, ACK/NACK, A/N) totransmission of data, it is studied to make the signal changeable foreach transmission.

In addition, in the existing LTE system, in the case where transmissionof uplink data (UL data) overlaps with transmission timing of uplinkcontrol information (UCI), transmission of the UL data and UCI isperformed using an uplink shared channel (PUSCH) (UCI on PUSCH). Also inthe future radio communication system, as in the existing LTE system, itis considered that transmission of UL data and UCI (A/N, etc.) isperformed using the PUSCH.

However, when transmission timing of the UCI to data is variable, in thecase of transmitting the UL data and UCI using the PUSCH, studies havenot proceeded yet on what transmission processing should be performed onsuch transmission. In the case of applying the same transmissionprocessing as in the existing LTE system, there is the risk that thecommunication quality deteriorates.

The present invention was made in view of such a respect, and it is anobject of the invention to provide a user terminal and radiocommunication method capable of preventing the communication qualityfrom deteriorating, also in the case of transmitting uplink data anduplink control information using an uplink shared channel in the futureradio communication system.

Means for Solving the Problem

One aspect of a user terminal of the present invention is characterizedby having a transmitting section that transmits uplink data and uplinkcontrol information, and a control section that determines a mappingpattern for the uplink control information, while selecting at least oneof puncturing processing and rate matching processing, based on at leastone of the number of bits of a receipt conformation signal included inthe uplink control information, an instruction from a base station and atype of the uplink control information, in the case of multiplexing theuplink data and the uplink control information into an uplink sharedchannel to transmit.

Advantageous Effect of the Invention

According to the present invention, in the future radio communicationsystem, it is possible to prevent the communication quality fromdeteriorating also in the case of transmitting the uplink data anduplink control information using the uplink shared channel.

BRIEF DESCRIPTION OF DRAWINGS

FIGS. 1A and 1B are diagrams showing one example of the case ofmultiplexing UL data (UL-SCH) and uplink control information (HARQ-ACK)into PUSCH;

FIGS. 2A and 2B are diagrams showing one example of the case ofmultiplexing UL data (UL-SCH) and uplink control information (HARQ-ACK)into PUSCH;

FIGS. 3A and 3B are diagrams showing one example of the case ofmultiplexing UL data (UL-SCH) and uplink control information (HARQ-ACK)into PUSCH;

FIGS. 4A and 4B are diagrams showing one example of the case ofmultiplexing UL data (UL-SCH) and uplink control information (HARQ-ACK,CQI and/or RI) into PUSCH;

FIGS. 5A and 5B are diagrams showing one example of HARQ-ACKtransmission in the case where PDSCH supports mini-slot-basedscheduling, and PUSCH supports slot-based scheduling;

FIG. 6 is a diagram showing one example of a schematic configuration ofa radio communication system according to this Embodiment;

FIG. 7 is a diagram showing one example of an entire configuration of aradio base station according to this Embodiment;

FIG. 8 is a diagram showing one example of a function configuration ofthe radio base station according to this Embodiment;

FIG. 9 is a diagram showing one example of an entire configuration of auser terminal according to this Embodiment;

FIG. 10 is a diagram showing one example of a function configuration ofthe user terminal according to this Embodiment; and

FIG. 11 is a diagram showing one example of hardware configurations ofthe radio base station and user terminal according to this Embodiment.

BEST MODE FOR CARRYING OUT THE INVENTION

In the future radio communication system (e.g., LTE Rel. 14 onward, 5G,NR or the like), it is studied to use time units (e.g., at least one ofslot, mini slot and the predetermined number of symbols) for enablingrespective time lengths to be changeable, as a scheduling unit of datachannels (including a DL data channel and/or UL data channel, alsosimply called data and the like).

Herein, the slot is a time unit based on numerology (e.g., subcarrierspacing and/or symbol length) that a user terminal applies. The numberof symbols per slot may be determined, corresponding to the subcarrierspacing. For example, in the case where the subcarrier spacing is 15 kHzor 30 kHz, the number of symbols per slot may be “7” or “14”. On theother hand, in the case where the subcarrier spacing is 60 kHz or more,the number of symbols per slot may be “14”.

The subcarrier spacing and the symbol length are in the reciprocalrelationship. Therefore, when symbols per slot are the same, as thesubcarrier spacing is higher (wider), the slot length is shorter. On theother hand, as the subcarrier spacing is lower (narrower), the slotlength is longer.

Further, the mini slot is a time unit shorter than the slot. The minislot may be comprised of symbols (e.g., 1-(slot length-1) symbols, asone example, 2 or 3 symbols) lower in number than the slot. Tomini-slots within a slot, the same numerology (e.g., subcarrier spacingand/or symbol length) as that of the slot may be applied, or numerology(e.g., subcarrier spacing higher than in the slot and/or symbol lengthshorter than in the slot) different from that of the slot may beapplied.

In the future radio communication system, in association withintroduction of time units different from those in the existing LTEsystem, it is expected to control transmission and reception (or,allocation, etc.) of signals and/or channels by applying a plurality oftime units to scheduling of data and the like. In the case of performingscheduling of data and the like using different time units, it isconsidered that a plurality of types of transmission period/transmissiontiming and the like of data occurs. For example, a user terminal thatsupports a plurality of time units performs transmission and receptionof data scheduled at a different time unit.

As one example, it is conceivable to apply scheduling (slot-basedscheduling) in a first time unit (e.g., slot basis) and scheduling in asecond time unit (e.g., non-slot basis) shorter than the first timebasis. The non-slot basis may be a mini slot basis or symbol basis. Inaddition, for example, it is possible to configure a slot using 7symbols or 14 symbols, and configure a mini slot using 1˜(slot length-1)symbols.

In this case, corresponding to a scheduling unit of data, transmissiontiming/transmission period of data varies in the time domain. Forexample, in the case of scheduling on a slot basis, a single item ofdata is allocated to one slot. On the other hand, in the case ofscheduling on a non-slot basis (mini slot basis or symbol basis), datais selectively allocated to a part of regions of one slot. Therefore, inthe case of scheduling on a non-slot basis, it is possible to allocate aplurality of items of data to one slot.

Further, in the future radio communication system, in order to flexiblycontrol scheduling of data and the like, it is expected to maketransmission timing/transmission period of data and the like changeablefor each scheduling (transmission). For example, in non-slot-basedscheduling, data (e.g., PDSCH and/or PUSCH) is disposed over thepredetermined number of symbols, while starting an allocation positionfrom some symbol for each scheduling.

In the same manner as in the data (e.g., PDSCH and/or PUSCH) such thatthe transmission timing/transmission period is controlled variably, itis expected to also configure UCI (e.g., A/N) to the data so that thetransmission timing/transmission period is changeable for eachtransmission. For example, the base station indicates transmissiontiming/transmission period of the UCI to UE, using downlink controlinformation and/or higher layer signaling, etc. In this case, A/Nfeedback timing is flexibly configured in a period after downlinkcontrol information for notifying of the transmissiontiming/transmission period of the A/N and/or corresponding PDSCH.

Thus, in the future radio communication system, it is expected toflexibly configure one or both of the transmission timing/transmissionperiod of A/N to DL data and transmission timing/transmission period ofPUSCH. On the other hand, in UL transmission, it is also required toachieve low PAPR (Peak-to-Average Power Ratio) and/or lowinter-modulation distortion (IMD).

As a method of achieving low PAPR and/or low IMD in UL transmission, inthe case where UCI transmission and UL data (UL-SCH) transmission occursat the same timing, there is a method of multiplexing the UCI and ULdata into a PUSCH to transmit (also called UCI piggyback on PUSCH, UCIon PUSCH).

In the existing LTE system, in the case of transmitting UL data and UCI(e.g., A/N) using the PUSCH, the UL data is subjected to puncturingprocessing, and the UCI is multiplexed into resources subjected to thepuncturing processing. This is because capacity (or, ratio) of the UCImultiplexed into the PUSCH is not so high in the existing LTE systemand/or complexity of reception processing is suppressed in the basestation also in the case where a detection mistake of a DL signal occursin UE.

Performing puncturing processing on data refers to that any coded symbolis not mapped to the resource (e.g., resource for UCI) that is notusable actually (the resource is made vacant), while performing codingon the premise that resources allocated to the data are usable. On thereceiving side, by not using the coded symbol of the punctured resourcein decoding, it is possible to suppress characteristic deterioration dueto puncturing.

Also in the future radio communication system, as in the existing LTEsystem, it is considered that UCI on PUSCH is performed. However, whentransmission timing of the UCI to data is variable, in the case oftransmitting the UL data and UCI using the PUSCH, studies have notproceeded yet on what transmission processing should be performed on theUL data, UCI and the like. In this case, when UCI on PUSCH is applied inthe same manner as that in the existing LTE system predicated on thattransmission timing/transmission period of data and/or UCI is fixedlyconfigured, there is the risk that the communication qualitydeteriorates.

The inventors of the present invention noted the respect that ratematching processing is applicable to UL data in the case of transmittingthe UL data and UCI using a PUSCH, and conceived determining a mappingpattern for the UCI, while selecting a processing method (puncturingprocessing and rate matching processing) to apply to the UL data, basedon a predetermined condition and the like.

Performing rate matching processing on data refers to controlling thenumber of bits (coded bits) subsequent to coding, in consideration ofactually usable radio resources. In the case where the number of codedbits is lower than the number of bits capable of being mapped toactually usable resources, at least a part of the coded bits may berepeated. In the case where the number of coded bits is higher than thenumber of bits capable of being mapped, at least a part of the codedbits may be deleted.

By performing the rate matching processing on UL data, since actuallyusable resources are considered, as compared with the puncturingprocessing, it is possible to perform coding so that a coding rate ishigh (with high performance). Accordingly, for example, in the casewhere a size of a payload of UCI is large, by applying the rate matchingprocessing as a substitute for the puncturing processing, since it ispossible to generate UL signals with higher quality, it is possible toimprove the communication quality.

This Embodiment will be described below in detail. In addition, in thisEmbodiment, the UCI may include at least one of a scheduling request(SR), delivery acknowledgement signal (also referred to as HARQ-ACK:Hybrid Automatic Repeat reQuest-Acknowledge, ACK or NACK (Negative ACK),A/N or the like), CQI: Channel Quality Indicator) to a DL data channel(e.g., PDSCH: Physical Downlink Shared Channel)), channel stateinformation (CSI) including Rank Indicator (RI), and buffer statusreport (BSR).

(Aspect 1)

Aspect 1 describes the case of determining a mapping pattern forHARQ-ACK, while determining a processing method (puncturing processingor rate matching processing) to apply to UL data, based on the number ofbits of delivery acknowledgement signal (HARQ-ACK) included in UCI, inthe case of multiplexing the uplink control information (UCI) and ULdata (UL-SCK) into an uplink shared channel (PUSCH). In other words, inAspect 1, a UE selects the mapping pattern of HARQ-ACK and processingmethod based on the number of bits of HARQ-ACK to apply to the UL data.

FIGS. 1A and 1B show one example in the case of multiplexing UL data(UL-SCH) and uplink control information (HARQ-ACK) into a PUSCH. Asshown in FIG. 1, in a slot where the UL data (PUSCH) is scheduled, whenthere is transmission of UCI (e.g., A/N, etc.) using a PUCCH allocatedto the slot, the UE multiplexes the UCI into the PUSCH to transmit.

FIG. 1A illustrates a mapping pattern A (pattern A) selected forHARQ-ACK transmission in the case where the number of bits of HARQ-ACKis “2” or less. In the case where the number of bits of HARQ-ACK is “2”or less, the UE applies puncturing processing to UL data, andmultiplexes HARQ-ACK into a UL resource subjected to the puncturingprocessing. Herein, the UL resource to undergo puncturing processing maybe called a punctured resource, resource for puncturing and the like.The mapping pattern may be called a UCI allocation configuration, UCImultiplexing position, and UCI allocation position.

As shown in FIG. 1A, in the pattern A, each symbol after a DMRS symbolis set for the resource for puncturing. In the pattern A, the resourcefor puncturing disposed in an adjacent symbol in the time domain isconfigured not to overlap in the frequency domain. In other words,mapping is made so that the UCI is distributed in the frequency domainand time domain. Thus, by distributing the UCI in the frequency and/ortime domain to arrange, it is possible to obtain frequency diversitygain on the UCI. Further, in the case of using a plurality of CBs fortransmission of uplink data, it is possible to distribute the number ofpunctures (or, the number of UCI multiplexes) among the CBs.

In addition, the resource for puncturing in the pattern A may beconfigured in any UL resource of a slot except the DMRS symbol. Thepattern A may be beforehand defined by specifications, or may be changedcorresponding to transmission conditions (e.g., frequency region (thenumber of PRBs, etc.) used in PUSCH transmission, the number of symbolsconstituting the slot, etc.) of HARQ-ACK. HARQ-ACK is mapped to theseresources for puncturing. UL data is allocated to UL resources aroundthese resources for puncturing. UCI except HARQ-ACK may be allocated toUL resources around the resource for puncturing.

FIG. 1B illustrates a mapping pattern B (pattern B) selected forHARQ-ACK transmission in the case where the number of bits of HARQ-ACKexceeds “2”. In the case where the number of bits of HARQ-ACK exceeds“2”, the UE applies rate matching processing to UL data, and multiplexesHARQ-ACK into a UL resource subjected to the rate matching processing.Herein, the UL resource to undergo rate matching may be called arate-matched resource, resource for rate matching and the like.

As shown in FIG. 1B, in the pattern B, the resource for rate matching isconfigured in a symbol immediately after the DMRS symbol. In the patternB, HARQ-ACK is localized and mapped to a predetermined region.Particularly, by localizing and mapping HARQ-ACK to a region (e.g.,region including at least a symbol adjacent to the DMRS) near the DMRS,it is possible to improve channel estimation accuracy of HARQ-ACK.

In addition, the resource for rate matching in the pattern B may beconfigured in any UL resource of a slot except the DMRS symbol. It mayalso be configured that the resource for rate matching is not localized(e.g., to one place) to map. For example, the resource may bedistributed and mapped in the frequency domain, in a first half region(e.g., symbol adjacent to the DMRS) of the slot. Further, the pattern Bmay be beforehand defined by specifications, or may be changedcorresponding to transmission conditions (e.g., frequency region (thenumber of PRBs, etc.) used in PUSCH transmission, the number of symbolsconstituting the slot, etc.) of HARQ-ACK. HARQ-ACK is mapped to theresource for rate matching. UL data is allocated to UL resources aroundthe resource for rate matching. UCI except HARQ-ACK may be allocated toUL resources around the resource for rate matching.

In the case of applying frequency hopping to the PUSCH, HARQ-ACK may bemapped to both hopped UL resources. In this case, in the pattern A, theresource for puncturing is mapped to both UL resources. In the patternB, the resource for rate matching is mapped to both UL resources.

In Aspect 1, the UE determines whether the number of bits of HARQ-ACK is“2” or less, or exceeds “2”, and in the former case, selects the patternA to multiplex HARQ-ACK into the resource for puncturing, while in thelatter case, selecting the pattern B to multiplex HARQ-ACK into theresource for rate matching. By this means, for example, it is possibleto select a suitable coding rate corresponding to a payload of HARQ-ACK,and to suppress deterioration of the communication quality.

Further, in Aspect 1, the UE selects a different mapping pattern,corresponding to the number of bits (2 bits) of HARQ-ACK, and determinesthe processing method (puncturing processing or rate matchingprocessing) to apply to UL data. Thus, by applying the mapping patternsupporting the processing method to apply in UCI on PUSCH, it ispossible to multiplex the UCI by the method suitable for each processingmethod.

Herein, descriptions will be given to specific examples of the number ofbits (2 bits) of HARQ-ACK that is a criterion in the case of selectingthe pattern A or B. The number of bits (2 bits) of HARQ-ACK may beswitched, corresponding to the presence or absence of application ofHARQ-ACK bundling. In the case where the HARQ-ACK bundling is notapplied, the number of bits of HARQ-ACK may be used without anymodification.

On the other hand, in the case where HARQ-ACK bundling is applied, thenumber of bits (2 bits) of HARQ-ACK that is the criterion in the case ofselecting the pattern A or B may be judged based on the number of bitssubsequent to application of HARQ-ACK bundling. In other words, in thecase where the number of bits of HARQ-ACK subsequent to HARQ-ACKbundling is “2” or less, the pattern A is selected, and HARQ-ACK ismultiplexed into the resource for puncturing. On the other hand, in thecase where the number of bits of HARQ-ACK subsequent to HARQ-ACKbundling exceeds “2”, the pattern B is selected, and HARQ-ACK ismultiplexed into the resource for rate matching.

In the case where HARQ-ACK bundling is applied, until the number of bitsof HARQ-ACK reaches “2”, irrespective of the type of a target ofHARQ-ACK, the pattern A may be selected. For example, 2 bits mapped tothe resource for puncturing in the pattern A include HARQ-ACK to 2codewords included in the PDSCH of the same slot (or same mini slot) ofthe same carrier (component carrier).

Further, included is HARQ-ACK to 2 code block groups included in thePDSCH of the same slot (or same mini slot) of the same carrier.Furthermore, included is HARQ-ACK to 2 PDSCH transport blocks in aplurality of different slots (a plurality of different mini slots) ofthe same carrier. Still furthermore, included is HARQ-ACK to 2 PDSCHtransport blocks in the same or a plurality of different slots (the sameor a plurality of different mini slots) of a plurality of differentcarriers.

In addition, in the case where HARQ-ACK bundling is applied, it may alsobe configured that the pattern A is selected only for a particulartarget of HARQ-ACK. For example, the pattern A may be selected only forHARQ-ACK to two codewords (code blocks, code block groups) included in aPDSCH. On the other hand, for targets of HARQ-ACK except the particulartarget, even when the number of bits of HARQ-ACK is “2”, the pattern Bmay be selected.

For example, in the case where 2 bits are necessary for HARQ-ACK to aplurality of codewords, the pattern A is selected, and HARQ-ACK ismultiplexed into the resource for puncturing. On the other hand, in thecase where 2 bits are necessary for HARQ-ACK to a plurality of componentcarriers (CCs) or a plurality of slots, the pattern B is selected, andHARQ-ACK is multiplexed into the resource for rate matching. Thus, byconfiguring so that the pattern A is selected only for a particulartarget of HARQ-ACK, it is possible to suppress that recognition of thenumber of HARQ-ACK bits and pattern is made different between the basestation and the terminal (UE). For example, in the case of scheduling aplurality of codewords in a single piece of DCI, any mistake is not madein the recognition of whether the number of HARQ-ACK bits to transmit is“2” or “1”. However, in the case of determining whether the number ofHARQ-ACK bits is “2” or “1” by scheduling for a plurality of CCs orslots, since respective data is scheduled by different pieces of DCI,when the terminal makes a detection mistake only in any DCI, there is apossibility that the recognition of the number of HARQ-ACK bits is madedifferent between the base station and the terminal. In such a case, thepattern A is selected in the case where 2 bits are necessary forHARQ-ACK to a plurality of codewords, and except the case, in the casewhere 2 bits are necessary for HARQ-ACK, the pattern B is selected. Bythus selecting, it is possible to avoid that a different pattern isselected corresponding to the detection mistake of DCI, and that therecognition is made different between the base station and the terminal.

Herein, the description is given on the assumption that the number ofbits of HARQ-ACK is “2” as the criterion in the case of selecting thepattern A or B, but the number of bits as the criterion is not limitedto “2”. The predetermined number of bits such as 1 bit or 3 bits or moreis set, and the mapping pattern and processing method (puncturingprocessing or rate matching processing) of UL data may be selected basedon the predetermined number of bits.

(Aspect 2)

Aspect 2 differs from Aspect 1 in the respect that a mapping patternselected for HARR-ACK transmission is different in the case where thenumber of bits of HARQ-ACK exceeds “2”. Aspect 2 is common to Aspect 1in the respect of determining the mapping pattern for HARQ-ACK, whiledetermining the processing method (puncturing processing or ratematching processing) to apply to UL data, based on the number of bits ofdelivery acknowledgement signal (HARQ-ACK) included in UCI.

FIGS. 2A and 2B show one example in the case of multiplexing UL data(UL-SCH) and uplink control information (HARQ-ACK) into a PUSCH. FIG. 2Aillustrates the mapping pattern A (pattern A) selected for HARQ-ACKtransmission in the case where the number of bits of HARQ-ACK is “2” orless. The pattern A is common to Aspect 1, and therefore, the detaileddescription thereof is omitted. Also in Aspect 2, the resource forpuncturing in the pattern A may be configured in any UL resources of aslot except the DMRS symbol.

FIG. 2B illustrates a mapping pattern C (pattern C) selected forHARQ-ACK transmission in the case where the number of bits of HARQ-ACKexceeds “2”. The pattern C constitutes a mapping pattern obtained bycombining the pattern A and pattern B in Aspect 1. In other words, thepattern C may be a configuration including a part of the pattern A. As amatter of course, the pattern C is not limited thereto. The pattern Cshown in FIG. 2B illustrates the case where the resource for puncturingand the resource for rate matching overlap with each other in a symbolimmediately after the DMRS symbol. The resource for rate matching in thepattern C may be configured in any UL resources of a slot except theDMRS symbol.

In Aspect 2, in the case where the number of bits of HARQ-ACK exceeds“2”, the UE applies the pattern A with respect to particular 2 bits, andmultiplexes HARQ-ACK into the resource for puncturing. On the otherhand, the UE applies the pattern B with respect to bits (bits exceeding2 bits) except the particular 2 bits, and multiplexes HARQ-ACK into theresource for rate matching. In the case where there is the resourcewhere the pattern A and the pattern B overlap with each other, HARQ-ACKto map with the pattern B is first mapped, and subsequently, HARQ-ACK tomap with the pattern A may be rewritten into the resource.Alternatively, HARQ-ACK to map with the pattern A is first mapped, andsubsequently, HARQ-ACK to map with the pattern B may be rewritten intothe resource.

Handling of the number of bits (2 bits) of HARQ-ACK that is a criterionin the case of selecting the pattern A or C is the same as in Aspect 1.In other words, the number of bits (2 bits) of HARQ-ACK may be switched,corresponding to the presence or absence of application of HARQ-ACKbundling. In the case where HARQ-ACK bundling is applied, until thenumber of bits of HARQ-ACK reaches “2”, irrespective of the type of atarget of HARQ-ACK, the pattern A may be selected, or the pattern A maybe selected for only a particular target of HARQ-ACK.

Herein, descriptions will be given to specific examples of particular 2bits mapped to the resource for puncturing according to the pattern A inthe case where the number of bits exceeds “2”. For example, asparticular 2 bits, it is possible to select HARQ-ACK to a PDSCHtransmitted in a cell with the minimum cell index or a primary cell(PCell).

At the time of fallback, only the PCell transmits the PDSCH to the UE.In this case, the number of required bits of HARQ-ACK is limited to “2”.By selecting HARQ-ACK to the PDSCH transmitted in the cell with theminimum cell index or PCell as particular 2 bits, it is possible tosimplify control in the case of shifting to fallback.

Further, as particular 2 bits, HARQ-ACK may be selected to a PDSCHtransmitted in a slot (or, mini slot) nearest transmission timing ofHARQ-ACK (i.e., HARQ-ACK to the PDSCH transmitted latest). In HARQ-ACKto the PDSCH transmitted latest, since the time elapsed betweenreception of the PDSCH and transmission of HARQ-ACK is the shortest, theprocessing load on the UE increases in the case of performing the ratematching processing.

By selecting HARQ-ACK to the PDSCH transmitted latest as particular 2bits and applying the puncturing processing, it is possible to simplifycontrol in the UE, and to decrease time required for processing up totransmission of HARQ-ACK.

Furthermore, as particular 2 bits, HARQ-ACK may be selected to a PDSCHtransmitted in a slot (or, mini slot) after UL grant. In HARQ-ACK to thePDSCH transmitted after UL grant, time elapsed between reception of thePDSCH and transmission of HARQ-ACK is often short. By selecting HARQ-ACKto the PDSCH transmitted after UL grant as particular 2 bits, it ispossible to simplify control in the UE, and to decrease time requiredfor processing up to transmission of HARQ-ACK.

In the case of selecting HARQ-ACK to the PDSCH transmitted after ULgrant as particular 2 bits, when the number of bits of HARQ-ACK to thePDSCH transmitted after UL grant exceeds “2”, the following responsesare considered. For example, in the case where the total of HARQ-ACKs tothe PDSCHs transmitted after UL grant exceeds 2 bits, a part ofHARQ-ACKs (e.g., HARQ-ACK to the PDSCH transmitted latest) is selectedas particular 2 bits. Alternatively, in the case where the total ofHARQ-ACKs to the PDSCHs transmitted after UL grant exceeds 2 bits, thetotal is compressed to 2 bits by HARQ-ACK bundling, and the bits may bemapped by the puncturing processing of the PUSCH. Further, in the casewhere the total of HARQ-ACKs to the PDSCHs transmitted after UL grantexceeds 2 bits, the HARQ-ACK is transmitted on the PUCCH that istransmitted in the case where the PUSCH does not exist, and a segment inwhich the PUSCH and the PUCCH temporally overlap may be dropped.

Thus, in the case where the number of bits of HARQ-ACK exceeds “2”, byperforming the puncturing processing on particular 2 bits, andmultiplexing the UCI using the predetermined pattern, as compared withthe case of performing the rate matching processing on all bits, it ispossible to decrease the processing load on the UE. Further, bydistributing HARQ-ACK of particular 2 bits by other UCI, it is possibleto obtain frequency diversity gain on the HARQ-ACK of particular 2 bits.

Herein, the description is given on the assumption that the number ofbits of HARQ-ACK is “2” as the criterion in the case of selecting thepattern A or C, but the number of bits as the criterion is not limitedto “2”. The predetermined number of bits such as 1 bit or 3 bits or moreis set, and the mapping pattern and processing method (puncturingprocessing or rate matching processing) of UL data may be selected basedon the predetermined number of bits.

(Aspect 3)

Aspect 3 describes the case of determining a mapping pattern forHARQ-ACK, while determining the processing method (puncturing processingor rate matching processing) to apply to UL data, based on aninstruction from the radio base station, in the case of multiplexinguplink control information (UCI) and the UL data (UL-SCH) into an uplinkshared channel (PUSCH). In other words, in Aspect 3, irrespective of thenumber of bits of HARQ-ACK, a UE selects the mapping pattern of HARQ-ACKand processing method based on information configured from the basestation, and controls multiplexing of the UCI.

In Aspect 3, for example, based on an uplink control channel format(PUCCH format) indicated from the base station, the UE selects themapping pattern of HARQ-ACK and processing method. More specifically,based on the PUCCH format with respect to HARQ-ACK feedback, the UE iscapable of selecting the mapping pattern of HARQ-ACK and processingmethod.

FIG. 3 shows one example in the case of multiplexing UL data (US-SCH)and uplink control information (HARQ-ACK) into a PUSCH. In Aspect 3, themapping pattern selected based on the instruction from the base stationis capable of being configured as the pattern A and pattern BinAspect 1. In the following description, it is assumed to describe thecase of selecting the pattern A or B based on the instruction from thebase station. As in Aspect 1, it is possible to change the selectedmapping pattern arbitrarily.

FIG. 3A illustrates the mapping pattern A (pattern A) selected forHARQ-ACK transmission in the case where a first PUCCH format isindicated. In the case where the first PUCCH format is indicated, the UEapplies the puncturing processing to the UL data, and multiplexesHARQ-ACK into the UL resource subjected to the puncturing processing.

FIG. 3B shows another example of the mapping pattern B (pattern B)selected for HARQ-ACK transmission in the case where a second PUCCHformat is indicated. In the pattern B shown in FIG. 3B, the case isillustrated where the resource for rate matching is distributed anddisposed in the frequency domain. As a matter of course, the pattern Bshown in FIG. 1B may be applied. In the case where the second PUCCHformat is indicated, the UE applies the rate matching processing to theUL data, and multiplexes HARQ-ACK into the UL resource subjected to therate matching processing.

The first PUCCH format corresponds to a format of a size (e.g., thenumber of bits capable of being transmitted) smaller than the secondPUCCH. For example, the first PUCCH format may be a PUCCH format used intransmission for HARQ-ACK of 2 bits or less. Further, the second PUCCHformat may be a PUCCH format used in transmission for HARQ-ACK exceeding2 bits. As one example, the first PUCCH format may be made a shortPUCCH, and the second PUCCH format may be made a long PUCCH format setfor the higher number of symbols than in the short PUCCH format.

In the case where the UE is capable of using the first PUCCH formatsemi-statically, when the number of bits of HARQ-ACK to the PDSCHexceeds “2”, the UE may apply HARQ-ACK bundling to decrease the numberof bits of HARQ-ACK to “2”. In other words, in the case where HARQ-ACKbundling is applied, the number of bits (2 bits) of HARQ-ACK that is thecriterion in the case of selecting the pattern A or B is judged based onthe number of bits subsequent to application of HARQ-ACK bundling.

In Aspect 3, the UE determines whether the PUCCH format configured bythe base station is the first PUCCH format or the second PUCCH format,and in the former case, selects the pattern A to multiplex HARQ-ACK intothe resource for puncturing, while in the latter case, selecting thepattern B to multiplex HARQ-ACK into the resource for rate matching. Bythis means, for example, it is possible to select a suitable coding ratecorresponding to a payload of HARQ-ACK, and to suppress deterioration ofthe communication quality.

Further, in Aspect 3, irrespective of the number of bits of HARQ-ACK,the UE selects a different mapping pattern corresponding to the type ofthe PUCCH format for HARQ-ACK, and determines the processing method(puncturing processing or rate matching processing) to apply to UL data.By this means, since the UE is capable of controlling selection of thePUCCH format and the HARQ-ACK multiplexing processing on the PUSCH in aone-to-one correspondence, it is possible to reduce combinations oftransmission control methods with respect to HARQ-ACK transmission, andto decrease the terminal processing load.

(Aspect 4)

Aspect 4 describes the case of determining a mapping pattern forHARQ-ACK, while determining the processing method (puncturing processingor rate matching processing) to apply to UL data, based on the type(e.g., HARQ-ACK, CSI (CQI, RI) etc.) of UCI, in the case of multiplexingthe uplink control information (UCI) and the UL data (UL-SCH) into anuplink shared channel (PUSCH). In other words, in Aspect 4, based on thetype of UCI, a UE selects the mapping pattern of the UCI and processingmethod, and controls multiplexing of the UCI.

In Aspect 4, in the case where UCI includes CQI and/or RI, irrespectiveof the presence or absence of HARQ-ACK, the UE applies the rate matchingprocessing to UL data, and multiplexes the CQI and/or RI into the ULresource subjected to the rate matching processing. In the case wherethe UCI further includes HARQ-ACK, for example, the CQI and/or RI andHARQ-ACK are jointly encoded. The UL data is allocated to UL resourcesaround the resource for rate matching, and is transmitted.

FIG. 4A illustrates a mapping pattern (pattern D) selected for UCItransmission in the case where the UCI includes the CQI and/or RI, inaddition to HARQ-ACK. The pattern D may be configured to be the same asthe pattern B. As shown in FIG. 4A, in the pattern D, the resource forrate matching is configured in a symbol immediately after the DMRSsymbol. The HARQ-ACK, CQI and/or RI are mapped to the resource for ratematching. UL data is allocated to UL resources around the resource forrate matching and is transmitted.

In Aspect 4, in the case where UCI includes CQI and/or RI, irrespectiveof the presence or absence of HARQ-ACK, the UE applies the rate matchingprocessing to UL data, and multiplexes the CQI and/or RI into the ULresource subjected to the rate matching processing. By this means, sincethe UE is capable of performing the rate matching processingcollectively on a plurality of types of UCI, and multiplexing the UCIbased on a single mapping pattern, it is possible to simplify theprocessing of the UE.

Herein, in the case where UCI includes CQI and/or RI, the case is shownwhere the UE applies the rate matching processing to UL data,irrespective of the presence or absence of HARQ-ACK. Further, in thecase where the UCI includes HARQ-ACK, the CQI and/or RI and HARQ-ACK arejointly encoded. In contrast thereto, in the case where the UCI includesHARQ-ACK, CQI and/or RI, the UE selects the pattern D for the CQI and/orRI, and multiplexes the CQI and/or RI into the resource for ratematching. On the other hand, the UE may select from among the mappingpatterns (patterns A to C) according to the above-mentioned Aspects 1 to3, with respect to HARQ-ACK, and select the processing method(puncturing processing or rate matching processing) to apply to UL data.

FIG. 4B illustrates an Aspect of mapping of HARQ-ACK, CQI and/or RI inthis case. FIG. 4B illustrates the case where the number of bits ofHARQ-ACK is “2” or less, and the pattern A is selected. In the mappingpattern shown in FIG. 4B, the pattern D is selected with respect to CQIand/or RI, and the CQI and/or RI is multiplexed into the resource forrate matching. Further, the pattern A is selected with respect toHARQ-ACK, and the HARQ-ACK is multiplexed into the resource forpuncturing. For example, the CQI and/or RI, and HARQ-ACK are separatelyencoded.

In the case of thus mapping the UCI, since it is possible to apply thepuncturing processing to HARQ-ACK, for example, it is possible todecrease the processing load on the UE side also in the case where atime of period is short between transmission timing of the PDSCH thatcorresponds to HARQ-ACK and UCI transmission timing.

The above-mentioned Aspects 1 to 4 describe the case of being applied toscheduling (slot-based scheduling) in the first time unit (e.g., slotbasis). However, as application targets of the Aspects 1 to 4, theAspects may be applied to scheduling (non-slot-based scheduling) in thesecond time unit (e.g., non-slot basis) shorter than the first timeunit. For example, the Aspects may be applied to scheduling(mini-slot-based scheduling) on the mini slot basis.

In applying to mini-slot-based scheduling, the Aspects may be applied tonot only the case where both the PUSCH (UL) and the PDSCH (DL) supportthe mini-slot-based scheduling, but also the case where themini-slot-based scheduling is supported on one of UL and DL. Forexample, the Aspects may be applied to the case where the PDSCH supportsthe mini-slot-based scheduling, while the PUSCH supports the slot-basedscheduling.

FIGS. 5A and 5B contain diagrams showing one example of HARQ-ACKtransmission in the case where the PDSCH supports the mini-slot-basedscheduling, and the PUSCH supports the slot-based scheduling. FIGS. 5Aand 5B illustrate the case where the number of symbols per slot is “14”,and symbols per mini slot are 2 symbols. In addition, herein, describedis the case of transmitting HARQ-ACK according to the above-mentionedAspect 1.

FIG. 5A illustrates the case of multiplexing HARQ-ACK of 2 bits to thePDSCH allocated to each of 3 mini slots into the PUSCH to transmit. InFIG. 5A, since HARQ-ACK to the PDSCH is 2 bits, the puncturingprocessing is applied to UL data, and HARQ-ACK is multiplexed into theUL resource (resource for puncturing) subjected to the puncturingprocessing (pattern A: see FIG. 1A). For example, the HARQ-ACK of 2 bitsto the PDSCH allocated to the first mini slot is multiplexed into firstand second symbols of the PUCSH and is transmitted.

FIG. 5B illustrates the case of multiplexing HARQ-ACK of 6 bits into thePDSCH allocated to each of 3 mini slots into the PUSCH to transmit. InFIG. 5B, since HARQ-ACK to the PDSCH is 6 bits, the rate matchingprocessing is applied to UL data, and HARQ-ACK is multiplexed into theUL resource (resource for rate matching) subjected to the rate matchingprocessing (pattern B: see FIG. 1B). For example, the HARQ-ACK of 6 bitsto the PDSCH allocated to three mini slots from the beginning ismultiplexed into first and second symbols of the PUCSH and istransmitted. In addition, in this case, the base station may notify theterminal of that HARQ-ACK exceeding 2 bits may be multiplexed, at timingof scheduling the first mini slot of two symbols. As a method ofnotifying, for example, the base station may use a downlink controlsignal (DCI) for scheduling the two-symbol-mini-slot, DCI for schedulingthe PUSCH and the like.

(Radio Communication System)

A configuration of a radio communication system according to thisEmbodiment will be described below. In the radio communication system,the radio communication method according to each of the above-mentionedAspects is applied. In addition, the radio communication methodaccording to each of the above-mentioned Aspects may be applied alone,or may be applied in combination.

FIG. 6 is a diagram showing one example of a schematic configuration ofthe radio communication system according to this Embodiment. In theradio communication system 1, it is possible to apply carrieraggregation (CA) to aggregate a plurality of base frequency blocks(component carriers) with a system bandwidth (e.g., 20 MHz) of the LTEsystem as one unit and/or dual connectivity (DC). In addition, the radiocommunication system 1 may be called SUPER 3G, LTE-A (LTE-Advanced),IMT-Advanced, 4G, 5G, FRA (Future Radio Access), NR (New RAT) and thelike.

The radio communication system 1 as shown in FIG. 6 is provided with aradio base station 11 for forming a macrocell C1, and radio basestations 12 a to 12 c disposed inside the macrocell C1 to form smallcells C2 narrower than the macrocell C1. Further, a user terminal 20 isdisposed in the macrocell C1 and each of the small cells C2. It may beconfigured to apply different numerology between cells. In addition, thenumerology refers to a set of communication parameters characterizingdesign of signals in some RAT and/or design of RAT.

The user terminal 20 is capable of connecting to both the radio basestation 11 and the radio base station 12. The user terminal 20 isassumed to concurrently use the macrocell C1 and small cell C2 usingdifferent frequencies, by CA or DC. Further, the user terminal 20 mayapply CA or DC using a plurality of cells (CCs) (e.g., 2 or more CCs).Furthermore, the user terminal is capable of using a licensed band CCand an unlicensed band CC as a plurality of CCs.

Moreover, the user terminal 20 is capable of performing communication ineach cell, using Time Division Duplex (TDD) or Frequency Division Duplex(FDD). A cell of TDD and a cell of FDD may be called TDD carrier (Frameconfiguration type 2), FDD carrier (Frame configuration type 1), or thelike, respectively.

Further, in each cell (carrier), any one of a subframe (also referred toas TTI, ordinary TTI, long TTI, ordinary subframe, long subframe, slotand the like) having a relatively long time length (e.g., 1 ms) and asubframe (also referred to as short TTI, short subframe, slot and thelike) having a relatively short time length may be applied, or both thelong subframe and the short subframe may be applied. Further, in eachcell, subframes with two or more time lengths may be applied.

The user terminal 20 and radio base station 11 are capable ofcommunicating with each other using carriers (called the existingcarrier, Legacy carrier and the like) with a narrow bandwidth in arelatively low frequency band (e.g., 2 GHz). On the other hand, the userterminal 20 and radio base station 12 may use carriers with a widebandwidth in a relatively high frequency band (e.g., 3.5 GHz, 5 GHz, 30GHz to 70 GHz, etc.), or may use the same carrier as in the radio basestation 11. In addition, the configuration of the frequency band used ineach radio base station is not limited thereto.

It is possible to configure so that the radio base station 11 and radiobase station 12 (or, two radio base stations 12) undergo wiredconnection (e.g., optical fiber in conformity with CPRI (Common PublicRadio Interface), X2 interface, etc.), or wireless connection.

The radio base station 11 and each of the radio base stations 12 arerespectively connected to a higher station apparatus 30, and areconnected to a core network 40 via the higher station apparatus 30. Inaddition, for example, the higher station apparatus 30 includes anaccess gateway apparatus, Radio Network Controller (RNC), MobilityManagement Entity (MME) and the like, but is not limited thereto.Further, each of the radio base stations 12 may be connected to thehigher station apparatus 30 via the radio base station 11.

In addition, the radio base station 11 is a radio base station havingrelatively wide coverage, and may be called a macro base station,collection node, eNB (eNodeB), transmission and reception point and thelike. Further, the radio base station 12 is a radio base station havinglocal coverage, and may be called a small base station, micro-basestation, pico-base station, femto-base station, HeNB (Home eNodeB), RRH(Remote Radio Head), transmission and reception point and the like.Hereinafter, in the case of not distinguishing between the radio basestations 11 and 12, the stations are collectively called a radio basestation 10.

Each user terminal 20 is a terminal supporting various communicationschemes such as LTE and LTE-A, and may include a fixed communicationterminal, as well as the mobile communication terminal. Further, theuser terminal 20 is capable of performing Device-to-Device (D2D)communication with another user terminal 20

In the radio communication system 1, as radio access schemes, OFDMA(Orthogonal Frequency Division Multiple Access) is applicable ondownlink (DL), and SC-FDMA (Single Carrier-Frequency Division MultipleAccess) is applicable on uplink (UL). OFDMA is a multicarriertransmission scheme for dividing a frequency band into a plurality ofnarrow frequency bands (subcarriers), and mapping data to eachsubcarrier to perform communication. SC-FDMA is a single-carriertransmission scheme for dividing a system bandwidth into bands comprisedof one or contiguous resource blocks for each terminal so that aplurality of terminals uses mutually different bands, and therebyreducing interference among terminals. In addition, uplink and downlinkradio access schemes are not limited to the combination of the schemes,and OFDMA may be used on UL. Further, it is possible to apply SC-FDMA toa side link (SL) used in D2D.

As DL channels, in the radio communication system 1 are used a DL datachannel (PDSCH: Physical Downlink Shared Channel, also referred to as DLshared channel, etc.) shared by user terminals 20, broadcast channel(PBCH: Physical Broadcast Channel), L1/L2 control channels and the like.At least one of user data, higher layer control information and SIB(System Information Block) and the like are transmitted on the PDSCH.Further, MIB (Master Information Block) is transmitted on the PBCH.

The L1/L2 control channel includes DL control channels (e.g., PDCCH(Physical Downlink Control Channel) and/or EPDCCH (Enhanced PhysicalDownlink Control channel)), PCFICH (Physical Control Format IndicatorChannel), PHICH (Physical Hybrid-ARQ Indicator Channel) and the like.The downlink control information (DCI) including scheduling informationof the PDSCH and PUSCH and the like is transmitted on the PDCCH and/orEPDCCH. The number of OFDM symbols used in the PDCCH is transmitted onthe PCFICH. The EPDCCH is frequency division multiplexed with the PDSCHto be used in transmitting the DCI and the like as the PDCCH. It ispossible to transmit delivery acknowledgement signal (A/N, HARQ-ACK) onthe PUSCH, using at least one of the PHICH, PDCCH and EPDCCH.

As UL channels, in the radio communication system 1 are used a UL datachannel (PUSCH: Physical Uplink Shared Channel, also referred to as ULshared channel, etc.) shared by user terminals 20, UL control channel(PUCCH: Physical Uplink Control Channel), random access channel (PRACH:Physical Random Access Channel) and the like. User data and higher layercontrol information is transmitted on the PUSCH. The uplink controlinformation (UCI) including at least one of delivery acknowledgementsignal (A/N, HARQ-ACK) on the PDSCH and channel state information (CSI)is transmitted on the PUSCH or PUCCH. It is possible to transmit arandom access preamble to establish connection with the cell on thePRACH.

<Radio Base Station>

FIG. 7 is a diagram showing one example of an entire configuration ofthe radio base station according to this Embodiment. The radio basestation 10 is provided with a plurality of transmitting/receivingantennas 101, amplifying sections 102, transmitting/receiving sections103, baseband signal processing section 104, call processing section105, and communication path interface 106. In addition, with respect toeach of the transmitting/receiving antenna 101, amplifying section 102,and transmitting/receiving section 103, the radio base station may beconfigured to include at least one or more.

User data to transmit to the user terminal 20 from the radio basestation 10 on downlink is input to the baseband signal processingsection 104 from the higher station apparatus 30 via the communicationpath interface 106.

The baseband signal processing section 104 performs, on the user data,transmission processing including at least one of processing of PDCP(Packet Data Convergence Protocol) layer, segmentation and concatenationof the user data, transmission processing of RLC (Radio Link Control)layer such as RLC retransmission control, MAC (Medium Access Control)retransmission control (e.g., processing of HARQ (Hybrid AutomaticRequest reQuest)), scheduling, transmission format selection, channelcoding, rate matching, scrambling, Inverse Fast Fourier Transform (IFFT)processing and precoding processing, and the like to transfer to thetransmitting/receiving sections 103. Further, also concerning a downlinkcontrol signal, the section 104 performs transmission processing such aschannel coding and/or Inverse Fast Fourier Transform on the signal totransfer to the transmitting/receiving sections 103.

Each of the transmitting/receiving sections 103 converts the basebandsignal, which is subjected to precoding for each antenna and is outputfrom the baseband signal processing section 104, into a signal with aradio frequency band to transmit. The radio-frequency signal subjectedto frequency conversion in the transmitting/receiving section 103 isamplified in the amplifying section 102, and is transmitted from thetransmitting/receiving antenna 101.

The transmitting/receiving section 103 is capable of being comprised ofa transmitter/receiver, transmitting/receiving circuit ortransmitting/receiving apparatus explained based on common recognitionin the technical field according to the present invention. In addition,the transmitting/receiving section 103 may be comprised as an integratedtransmitting/receiving section, or may be comprised of a transmittingsection and receiving section.

On the other hand, for UL signals, radio-frequency signals received inthe transmitting/receiving antennas 101 are amplified in the amplifyingsections 102. The transmitting/receiving section 103 receives the ULsignal amplified in the amplifying section 102. Thetransmitting/receiving section 103 performs frequency conversion on thereceived signal into a baseband signal to output to the baseband signalprocessing section 104.

For UL data included in the input UL signal, the baseband signalprocessing section 104 performs Fast Fourier Transform (FFT) processing,Inverse Discrete Fourier Transform (IDFT) processing, error correctingdecoding, reception processing of MAC retransmission control, andreception processing of RLC layer and PDCP layer to transfer to thehigher station apparatus 30 via the communication path interface 106.The call processing section 105 performs at least one of call processingsuch as configuration and release of a communication channel, statemanagement of the radio base station 10, and management of radioresources.

The communication path interface 106 transmits and receives signalsto/from the higher station apparatus 30 via a predetermined interface.Further, the communication path interface 106 may transmit and receivesignals (backhaul signaling) to/from another adjacent radio base station10 via an inter-base station interface (e.g., optical fiber inconformity with CPRI (Common Public Radio Interface), X2 interface).

The transmitting/receiving section 103 receives the uplink controlinformation multiplexed into the uplink shared channel. In the case ofmultiplexing the uplink data and uplink control information into theuplink shared channel to transmit, the transmitting/receiving section103 transmits information for indicating whether to apply one or both ofpuncturing processing and rate matching processing to the uplink data.

FIG. 8 is a diagram showing one example of a function configuration ofthe radio base station according to this Embodiment. In addition, FIG. 8mainly illustrates function blocks of a characteristic portion in thisEmbodiment, and the radio base station 10 is assumed to have otherfunction blocks required for radio communication. As shown in FIG. 8,the baseband signal processing section 104 is provided with a controlsection 301, transmission signal generating section 302, mapping section303, received signal processing section 304, and measurement section305.

The control section 301 performs control of the entire radio basestation 10. For example, the control section 301 controls at least oneof generation of DL signals by the transmission signal generatingsection 302, mapping of DL signals by the mapping section 303, receptionprocessing (e.g., demodulation, etc.) of UL signals by the receivedsignal processing section 304, and measurement by the measurementsection 305.

Specifically, the control section 301 performs scheduling of the userterminal 20. For example, the control section 301 controls transmissiontiming and/or transmission period of the uplink shared channel, andcontrols transmission timing and/or transmission period of the uplinkcontrol information.

Further, in the case of multiplexing the uplink data and uplink controlinformation into the uplink shared channel to transmit, the controlsection 301 may control whether to apply one or both of puncturingprocessing and rate matching processing to the uplink data to notify theuser terminal.

The control section 301 is capable of being comprised of a controller,control circuit or control apparatus explained based on the commonrecognition in the technical field according to the present invention.

Based on instructions from the control section 301, the transmissionsignal generating section 302 generates DL signals (including the DLdata signal, DL control signal and DL reference signal) to output to themapping section 303.

The transmission signal generating section 302 is capable of being asignal generator, signal generating circuit or signal generatingapparatus explained based on the common recognition in the technicalfield according to the present invention.

Based on instructions from the control section 301, the mapping section303 maps the DL signal generated in the transmission signal generatingsection 302 to predetermined radio resources to output to thetransmitting/receiving section 103. The mapping section 303 is capableof being a mapper, mapping circuit or mapping apparatus explained basedon the common recognition in the technical field according to thepresent invention.

The received signal processing section 304 performs reception processing(e.g., demapping, demodulation, decoding, etc.) on the UL signal (e.g.,including the UL data signal, UL control signal and UL reference signal)transmitted from the user terminal 20. Specifically, the received signalprocessing section 304 may output the received signal and/or signalsubjected to the reception processing to the measurement section 305.Further, based on the UL control channel configuration indicated fromthe control section 301, the received signal processing section 304performs the reception processing of the UCI.

The measurement section 305 performs measurement on the received signal.The measurement section 305 is capable of being comprised of ameasurement device, measurement circuit or measurement apparatusexplained based on the common recognition in the technical fieldaccording to the present invention.

For example, based on received power (e.g., RSRP (Reference SignalReceived Power)) and/or received quality (e.g., RSRQ (Reference SignalReceived Quality)) of the UL reference signal, the measurement section305 may measure the channel quality of UL. The measurement result may beoutput to the control section 301.

<User Terminal>

FIG. 9 is a diagram showing one example of an entire configuration ofthe user terminal according to this Embodiment. The user terminal 20 isprovided with a plurality of transmitting/receiving antennas 201 forMIMO transmission, amplifying sections 202, transmitting/receivingsections 203, baseband signal processing section 204, and applicationsection 205.

Radio-frequency signals received in a plurality oftransmitting/receiving antennas 201 are respectively amplified in theamplifying sections 202. Each of the transmitting/receiving sections 203receives the DL signal amplified in the amplifying section 202. Thetransmitting/receiving section 203 performs frequency conversion on thereceived signal into a baseband signal to output to the baseband signalprocessing section 204.

The baseband signal processing section 204 performs at least one of FFTprocessing, error correcting decoding, reception processing ofretransmission control and the like on the input baseband signal. DLdata is transferred to the application section 205. The applicationsection 205 performs processing concerning layers higher than thephysical layer and MAC layer, and the like.

On the other hand, for UL data, the data is input to the baseband signalprocessing section 204 from the application section 205. The basebandsignal processing section 204 performs, on the data, at least one ofretransmission control processing (e.g., processing of HARQ), channelcoding, rate matching, puncturing, Discrete Fourier Transform (DFT)processing, IFFT processing and the like to transfer to each of thetransmitting/receiving sections 203. Also on the UCI (e.g., at least oneof A/N of the DL signal, channel state information (CSI) and schedulingrequest (SR) and the like), the section 204 performs at least one ofchannel coding, rete matching, puncturing, DFT processing, IFFTprocessing and the like to transfer to each of thetransmitting/receiving sections 203.

Each of the transmitting/receiving sections 203 converts the basebandsignal output from the baseband signal processing section 204 into asignal with a radio frequency band to transmit. The radio-frequencysignals subjected to frequency conversion in the transmitting/receivingsections 203 are amplified in the amplifying sections 202, and aretransmitted from the transmitting/receiving antennas 201, respectively.

Further, in the case where the transmission period of the uplink sharedchannel overlaps with at least a part of the transmission period of theuplink control information, the transmitting/receiving section 203transmits the uplink control information, using the uplink sharedchannel. Furthermore, in the case of multiplexing the uplink data anduplink control information into the uplink shared channel to transmit,the transmitting/receiving section 203 may receive the information forindicating whether to apply one or both of puncturing processing andrate matching processing to the uplink data.

The transmitting/receiving section 203 is capable of being atransmitter/receiver, transmitting/receiving circuit ortransmitting/receiving apparatus explained based on the commonrecognition in the technical field according to the present invention.In addition, the transmitting/receiving section 203 may be comprised asan integrated transmitting/receiving section, or may be comprised of atransmitting section and receiving section.

FIG. 10 is a diagram showing one example of a function configuration ofthe user terminal according to this Embodiment. In addition, FIG. 10mainly illustrates function blocks of a characteristic portion in thisEmbodiment, and the user terminal 20 is assumed to have other functionblocks required for radio communication. As shown in FIG. 10, thebaseband signal processing section 204 that the user terminal 20 has isprovided with a control section 401, transmission signal generatingsection 402, mapping section 403, received signal processing section404, and measurement section 405.

The control section 401 performs control of the entire user terminal 20.For example, the control section 401 controls at least one of generationof UL signals by the transmission signal generating section 402, mappingof UL signals by the mapping section 403, reception processing of DLsignals by the received signal processing section 404, and measurementby the measurement section 405.

Further, the control section 401 controls transmission of the uplinkcontrol information using the uplink shared channel. For example, in thecase of multiplexing uplink data and uplink control information into theuplink shared channel to transmit, based on at least one of the numberof bits of a receipt conformation signal (HARQ-ACK) included in theuplink control information, an instruction from the base station 10 andthe type of the uplink control information, the control section 401determines a mapping pattern for the uplink control information, whileselecting at least one of puncturing processing and rate matchingprocessing as a processing method to apply to the uplink data and/or theuplink control information.

For example, in the case where the number of HARQ-ACK bits is thepredetermined number of bits (2 bits) or less, the control section 401selects the puncturing processing as the processing method, and selectsthe first mapping pattern (pattern A) as the mapping pattern (see FIG.1A). Further, in the case where the number of HARQ-ACK bits exceeds thepredetermined number of bits (2 bits), the control section 401 selectsthe rate matching processing as the processing method, and selects thesecond mapping pattern (pattern B) as the mapping pattern (see FIG. 1B).Alternatively, in the case where the number of HARQ-ACK bits exceeds thepredetermined number of bits (2 bits), the control section 401 mayselect the puncturing processing and rate matching processing as theprocessing method, and selects the third mapping pattern (pattern C)including the first mapping pattern as the mapping pattern (see FIG.2B).

Further, based on the uplink control channel format (PUCCH format), thecontrol section 401 may determine a mapping pattern for the uplinkcontrol information, while determining at least one of the puncturingprocessing and rate matching processing as the processing method toapply to the uplink data and/or uplink control information (see FIG. 3).Alternatively, based on the type of the uplink control information, thecontrol section 401 may determine a mapping pattern for the uplinkcontrol information, while determining at least one of the puncturingprocessing and rate matching processing as the processing method toapply to the uplink data and/or uplink control information (see FIG. 4).

The control section 401 is capable of being comprised of a controller,control circuit or control apparatus explained based on the commonrecognition in the technical field according to the present invention.

Based on instructions from the control section 401, the transmissionsignal generating section 402 generates (e.g., performs coding, ratematching, puncturing, modulation, etc. on) UL signals (including the ULdata signal, UL control signal, UL reference signal and UCI) to outputto the mapping section 403. The transmission signal generating section402 is capable of being a signal generator, signal generating circuit orsignal generating apparatus explained based on the common recognition inthe technical field according to the present invention.

Based on instructions from the control section 401, the mapping section403 maps the UL signal generated in the transmission signal generatingsection 402 to radio resources to output to the transmitting/receivingsection 203. The mapping section 403 is capable of being a mapper,mapping circuit or mapping apparatus explained based on the commonrecognition in the technical field according to the present invention.

The received signal processing section 404 performs reception processing(e.g., demapping, demodulation, decoding, etc.) on the DL signal (DLdata signal, scheduling information, DL control signal, DL referencesignal). The received signal processing section 404 outputs theinformation received from the radio base station 10 to the controlsection 401. For example, the received signal processing section 404outputs, to the control section 401, the broadcast information, systeminformation, higher layer control information by higher layer signalingsuch as RRC signaling, physical layer control information (L1/L2 controlinformation), and the like.

The received signal processing section 404 is capable of being comprisedof a signal processor, signal processing circuit or signal processingapparatus explained based on the common recognition in the technicalfield according to the present invention. Further, the received signalprocessing section 404 is capable of constituting the receiving sectionaccording to the present invention.

Based on a reference signal (e.g., CSI-RS) from the radio base station10, the measurement section 405 measures a channel state, and outputsthe measurement result to the control section 401. In addition,measurement of the channel state may be performed for each CC.

The measurement section 405 is capable of being comprised of a signalprocessing device, signal processing circuit or signal processingapparatus and a measurement device, measurement circuit or measurementapparatus explained based on the common recognition in the technicalfield according to the present invention.

<Hardware Configuration>

In addition, the block diagrams used in explanation of theabove-mentioned Embodiment show blocks on a function-by-function basis.These function blocks (configuration sections) are actualized by anycombination of hardware and/or software. Further, the means foractualizing each function block is not limited particularly. In otherwords, each function block may be actualized using a single apparatuscombined physically and/or logically, or two or more apparatuses thatare separated physically and/or logically are connected directly and/orindirectly (e.g., using cable and/or radio), and each function block maybe actualized using a plurality of these apparatuses.

For example, each of the radio base station, user terminal and the likein this Embodiment may function as a computer that performs theprocessing of the radio communication method of the present invention.FIG. 11 is a diagram showing one example of a hardware configuration ofeach of the radio base station and user terminal according to thisEmbodiment. Each of the radio base station 10 and user terminal 20 asdescribed above may be physically configured as a computer apparatusincluding a processor 1001, memory 1002, storage 1003, communicationapparatus 1004, input apparatus 1005, output apparatus 1006, bus 1007and the like.

In addition, in the following description, it is possible to replace theletter of “apparatus” with a circuit, device, unit and the like to read.With respect to each apparatus shown in the figure, the hardwareconfiguration of each of the radio base station 10 and the user terminal20 may be configured so as to include one or a plurality of apparatuses,or may be configured without including a part of apparatuses.

For example, a single processor 1001 is shown in the figure, but aplurality of processors may exist. Further, the processing may beexecuted by a single processor, or may be executed by one or moreprocessors at the same time, sequentially or using another technique. Inaddition, the processor 1001 may be implemented on one or more chips.

For example, each function in the radio base station 10 and userterminal 20 is actualized in a manner such that predetermined software(program) is read on the hardware of the processor 1001, memory 1002 andthe like, and that the processor 1001 thereby performs computations, andcontrols communication via the communication apparatus 1004, and readand/or write of data in the memory 1002 and storage 1003.

For example, the processor 1001 operates an operating system to controlthe entire computer. The processor 1001 may be comprised of a CentralProcessing Unit (CPU) including interfaces with peripheral apparatuses,control apparatus, computation apparatus, register and the like.

For example, the above-mentioned baseband signal processing section 104(204), call processing section 105 and the like may be actualized by theprocessor 1001.

Further, the processor 1001 reads the program (program code), softwaremodule, data and the like on the memory 1002 from the storage 1003and/or the communication apparatus 1004, and according thereto, executesvarious kinds of processing. Used as the program is a program thatcauses the computer to execute at least a part of operation described inthe above-mentioned Embodiment. For example, the control section 401 ofthe user terminal 20 may be actualized by a control program stored inthe memory 1002 to operate in the processor 1001, and the other functionblocks may be actualized similarly.

The memory 1002 is a computer-readable storage medium, and for example,may be comprised of at least one of ROM (Read Only Memory), EPROM(Erasable Programmable ROM), EEPROM (Electrically EPROM), RAM (RandomAccess Memory) and other proper storage media. The memory 1002 may becalled the register, cache, main memory (main storage apparatus) and thelike. The memory 1002 is capable of storing the program (program code),software module and the like executable to implement the radiocommunication method according to this Embodiment.

The storage 1003 is a computer-readable storage medium, and for example,may be comprised of at least one of a flexible disk, floppy (RegisteredTrademark) disk, magneto-optical disk (e.g., compact disk (CD-ROM(Compact Disc ROM), etc.), digital multi-purpose disk, Blu-ray(Registered Trademark) disk), removable disk, hard disk drive, smartcard, flash memory device (e.g., card, stick, key drive), magneticstripe, database, server and other proper storage media. The storage1003 may be called an auxiliary storage apparatus.

The communication apparatus 1004 is hardware (transmitting/receivingdevice) to perform communication between computers via a wired and/orwireless network, and for example, is also referred to as a networkdevice, network controller, network card, communication module and thelike. For example, in order to actualize Frequency Division Duplex (FDD)and/or Time Division Duplex (TDD), the communication apparatus 1004 maybe comprised by including a high-frequency switch, duplexer, filter,frequency synthesizer and the like. For example, thetransmitting/receiving antenna 101 (201), amplifying section 102 (202),transmitting/receiving section 103 (203), communication path interface106 and the like as described above may be actualized by thecommunication apparatus 1004.

The input apparatus 1005 is an input device (e.g., keyboard, mouse,microphone, switch, button, sensor, etc.) that receives input from theoutside. The output apparatus 1006 is an output device (e.g., display,speaker, LED (Light Emitting Diode) lamp, etc.) that performs output tothe outside. In addition, the input apparatus 1005 and output apparatus1006 may be an integrated configuration (e.g., touch panel).

Further, each apparatus of the processor 1001, memory 1002 and the likeis connected on the bus 1007 to communicate information. The bus 1007may be configured using a single bus, or may be configured usingdifferent buses between apparatuses.

Furthermore, each of the radio base station 10 and user terminal 20 maybe configured by including hardware such as a microprocessor, DigitalSignal Processor (DSP), ASIC (Application Specific Integrated Circuit),PLD (Programmable Logic Device), and FPGA (Field Programmable GateArray), or a part or the whole of each function block may be actualizedusing the hardware. For example, the processor 1001 may be implementedusing at least one of the hardware.

Modification

In addition, the term explained in the present Description and/or theterm required to understand the present Description may be replaced witha term having the same or similar meaning. For example, the channeland/or the symbol may be a signal (signaling). Further, the signal maybe a message. The reference signal is capable of being abbreviated as RS(Reference Signal), and according to the standard to apply, may becalled a pilot, pilot signal and the like. Furthermore, a componentcarrier (CC) may be called a cell, frequency carrier, carrier frequencyand the like.

Further, the radio frame may be comprised of one or a plurality offrames in the time domain. The one or each of the plurality of framesconstituting the radio frame may be called a subframe. Furthermore, thesubframe may be comprised of one or a plurality of slots in the timedomain. The subframe may be a fixed time length (e.g., 1 ms) that is notdependent on numerology.

Furthermore, the slot may be comprised of one or a plurality of symbols(OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA(Single Carrier Frequency Division Multiple Access) symbols and thelike) in the time domain. Still furthermore, the slot may a time unitbased on numerology. Moreover, the slot may include a plurality of minislots. Each mini slot may be comprised of one or a plurality of symbolsin the time domain. Further, the mini slot may be called a subslot.

Each of the radio frame, subframe, slot, mini slot and symbol representsa time unit in transmitting a signal. For the radio frame, subframe,slot, mini slot and symbol, another name corresponding to each of themmay be used. For example, one subframe may be called Transmission TimeInterval (TTI), a plurality of contiguous subframes may be called TTI,or one slot or one mini slot may be called TTI. In other words, thesubframe and/or TTI may be the subframe (1 ms) in existing LTE, may be aframe (e.g., 1 to 13 symbols) shorter than 1 ms, or may be a framelonger than 1 ms. In addition, instead of the subframe, the unitrepresenting the TTI may be called the slot, mini slot and the like.

Herein, for example, the TTI refers to a minimum time unit of schedulingin radio communication. For example, in the LTE system, the radio basestation performs scheduling for allocating radio resources (frequencybandwidth, transmit power and the like capable of being used in eachuser terminal) to each user terminal in a TTI unit. In addition, thedefinition of the TTI is not limited thereto.

The TTI may be a transmission time unit of a data packet (transportblock) subjected to channel coding, code block and/or codeword, or maybe a processing unit of scheduling, link adaptation and the like. Inaddition, when the TTI is given, a time segment (e.g., the number ofsymbols) to which the transport block, code block and/or codeword isactually mapped may be shorter than the TTI.

In addition, when one slot or one mini slot is called the TTI, one ormore TTIs (i.e., one or more slots, or one or more mini slots) may bethe minimum time unit of scheduling. Further, the number of slots (thenumber of mini slots) constituting the minimum time unit of schedulingmay be controlled.

The TTI having a time length of 1 ms may be called ordinary TTI (TTI inLTE Rel.8-12), normal TTI, long TTI, ordinary subframe, normal subframe,long subframe or the like. The TTI shorter than the ordinary TTI may becalled shortened TTI, short TTI, partial or fractional TTI, shortenedsubframe, short subframe, mini slot, subslot or the like.

In addition, the long TTI (e.g., ordinary TTI, subframe, etc.) may beread with TTI having a time length exceeding 1 ms, and the short TTI(e.g., shortened TTI, etc.) may be read with TTI having a TTI length of1 ms or more and less than the TTI length of the long TTI.

The resource block (RB) is a resource allocation unit in the time domainand frequency domain, and may include one or a plurality of contiguoussubcarriers in the frequency domain. Further, the RB may include one ora plurality of symbols in the time domain, and may be a length of 1slot, 1 mini slot, 1 subcarrier, or 1 TTI. Each of 1 TTI and 1 subframemay be comprised of one or a plurality of resource blocks. In addition,one or a plurality of RBs may be called a physical resource block (PRB:Physical RB), subcarrier group (SCG: Sub-Carrier Group), resourceelement group (REG), PRB pair, RB pair and the like.

Further, the resource block may be comprised of one or a plurality ofresource elements (RE: Resource Element). For example, 1 RE may be aradio resource region of 1 subcarrier and 1 symbol.

In addition, structures of the above-mentioned radio frame, subframe,slot, mini slot, symbol and the like are only illustrative. For example,it is possible to modify, in various manners, configurations of thenumber of subframes included in the radio frame, the number of slots persubframe or radio frame, the number of mini slots included in the slot,the numbers of symbols and RBs included in the slot or mini slot, thenumber of subcarriers included in the RB, the number of symbols withinthe TTI, the symbol length, the cyclic prefix (CP) length and the like.

Further, the information, parameter and the like explained in thepresent Description may be expressed using an absolute value, may beexpressed using a relative value from a predetermined value, or may beexpressed using another corresponding information. For example, theradio resource may be indicated by a predetermined index.

The names used in the parameter and the like in the present Descriptionare not restrictive names in any respects. For example, it is possibleto identify various channels (PUCCH (Physical Uplink Control Channel),PDCCH (Physical Downlink Control Channel) and the like) and informationelements, by any suitable names, and therefore, various names assignedto these various channels and information elements are not restrictivenames in any respects.

The information, signal and the like explained in the presentDescription may be represented by using any of various differenttechniques. For example, the data, order, command, information, signal,bit, symbol, chip and the like capable of being described over theentire above-mentioned explanation may be represented by voltage,current, electromagnetic wave, magnetic field or magnetic particle,optical field or photon, or any combination thereof.

Further, the information, signal and the like are capable of beingoutput from a higher layer to a lower layer, and/or from the lower layerto the higher layer. The information, signal and the like may be inputand output via a plurality of network nodes.

The input/output information, signal and the like may be stored in aparticular place (e.g., memory), or may be managed using a managementtable. The input/output information, signal and the like are capable ofbeing rewritten, updated or edited. The output information, signal andthe like may be deleted. The input information, signal and the like maybe transmitted to another apparatus.

Notification of the information is not limited to the Aspects/Embodimentdescribed in the present Description, and may be performed using anothermethod.

For example, notification of the information may be performed usingphysical layer signaling (e.g., Downlink Control Information (DCI),Uplink Control Information (UCI)), higher layer signaling (e.g., RRC(Radio Resource Control) signaling, broadcast information (MasterInformation Block (MIB), System Information Block (SIB) and the like),MAC (Medium Access Control) signaling), other signals, or combinationthereof.

In addition, the physical layer signaling may be called L1/L2 (Layer1/Layer 2) control information (L1/L2 control signal), L1 controlinformation (L1 control signal) and the like. Further, the RRC signalingmay be called RRC message, and for example, may be RRC connection setup(RRC Connection Setup) message, RRC connection reconfiguration (RRCConnection Reconfiguration) message, and the like. Furthermore, forexample, the MAC signaling may be notified using MAC Control Element(MAC CE).

Further, notification of predetermined information (e.g., notificationof “being X”) is not limited to explicit notification, and may beperformed implicitly (e.g., notification of the predeterminedinformation is not performed, or by notification of differentinformation).

The decision may be made with a value (“0” or “1”) expressed by 1 bit,may be made with a Boolean value represented by true or false, or may bemade by comparison with a numerical value (e.g., comparison with apredetermined value).

Irrespective of that the software is called software, firmware,middleware, micro-code, hardware descriptive term, or another name, thesoftware should be interpreted widely to mean a command, command set,code, code segment, program code, program, sub-program, software module,application, software application, software package, routine,sub-routine, object, executable file, execution thread, procedure,function and the like.

Further, the software, command, information and the like may betransmitted and received via a transmission medium. For example, whenthe software is transmitted from a website, server or another remotesource using wired techniques (coaxial cable, optical fiber cable,twisted pair, Digital Subscriber Line (DSL) and the like) and/orwireless techniques (infrared, microwave and the like), these wiredtechniques and/or wireless techniques are included in the definition ofthe transmission medium.

The terms of “system” and “network” used in the present Description areused interchangeably.

In the present Description, the terms of “Base Station (BS)”, “radiobase station”, “eNB”, “gNB”, “cell”, “sector”, “cellgroup”, “carrier”and“component carrier” are capable of being used interchangeably. Thereis the case where the base station is called by the terms of fixedstation, NodeB, eNodeB (eNB), access point, transmission point,reception point, femto-cell, small cell and the like.

The base station is capable of accommodating one or a plurality of(e.g., three) cells (also called the sector). When the base stationaccommodates a plurality of cells, the entire coverage area of the basestation is capable of being segmented into a plurality of smaller areas,and each of the smaller areas is also capable of providing communicationservices by a base station sub-system (e.g., small base station (RRH:Remote Radio Head) for indoor use). The term of “cell” or “sector”refers to a part or the whole of coverage area of the base stationand/or base station sub-system that performs communication services inthe coverage.

In the present Description, the terms of “Mobile Station (MS)”, “userterminal”, “User Equipment (UE)”, and “terminal” are capable of beingused interchangeably.

There is the case where the base station is called by the terms of fixedstation, NodeB, eNodeB (eNB), access point, transmission point,reception point, femto-cell, small cell and the like.

There is the case where the Mobile Station may be called using asubscriber station, mobile unit, subscriber unit, wireless unit, remoteunit, mobile device, wireless device, wireless communication device,remote device, mobile subscriber station, access terminal, mobileterminal, wireless terminal, remote terminal, handset, user agent,mobile client, client, or some other suitable terms, by a person skilledin the art.

Further, the radio base station in the present Description may be readwith the user terminal. For example, each Aspect/Embodiment of thepresent invention may be applied to a configuration where communicationbetween the radio base station and the user terminal is replaced withcommunication among a plurality of user terminals (D2D:Device-to-Device). In this case, the functions that the above-mentionedradio base station 10 has may be the configuration that the userterminal 20 has. Further, the words of “up”, “down” and the like may beread with “side”. For example, the uplink channel may be read with aside channel.

Similarly, the user terminal in the present Description may be read withthe radio base station. In this case, the functions that theabove-mentioned user terminal 20 has may be the configuration that theradio base station 10 has.

In the present Description, particular operation performed by the basestation may be performed by an upper node thereof in some case. In anetwork including one or a plurality of network nodes having the basestation, it is obvious that various operations performed forcommunication with the terminal are capable of being performed by thebase station, one or more network nodes (e.g., MME (Mobility ManagementEntity), S-GW (Serving-Gateway) and the like are considered, but theinvention is not limited thereto) except the base station, orcombination thereof.

Each Aspect/Embodiment explained in the present Description may be usedalone, may be used in combination, or may be switched and used accordingto execution.

Further, with respect to the processing procedure, sequence, flowchartand the like of each Aspect/Embodiment explained in the presentDescription, unless there is a contradiction, the order may be changed.For example, with respect to the methods explained in the presentDescription, elements of various steps are presented in illustrativeorder, and are not limited to the presented particular order.

Each Aspect/Embodiment explained in the present Description may beapplied to LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B(LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobilecommunication system), 5G (5th generation mobile communication system),FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (NewRadio), NX (New radio access), FX (Future generation radio access), GSM(Registered Trademark) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (RegisteredTrademark)), IEEE 802.16 (WiMAX (Registered Trademark)), IEEE 802.20,UWB (Ultra-WideBand), Bluetooth (Registered Trademark), system usinganother proper radio communication method and/or the next-generationsystem extended based thereon.

The description of “based on” used in the present Description does notmean “based on only”, unless otherwise specified. In other words, thedescription of “based on” means both of “based on only” and “based on atleast”.

Any references to elements using designations of “first”, “second” andthe like used in the present Description are not intended to limit theamount or order of these elements overall. These designations arecapable of being used in the present Description as the useful method todistinguish between two or more elements. Accordingly, references offirst and second elements do not mean that only two elements areadopted, or that the first element should be prior to the second elementin any manner.

There is the case where the term of “determining” used in the presentDescription includes various types of operation. For example,“determining” may be regarded as “determining” calculating, computing,processing, deriving, investigating, looking up (e.g., looking up in atable, database or another data structure), ascertaining and the like.Further, “determining” may be regarded as “determining” receiving (e.g.,receiving information), transmitting (e.g., transmitting information),input, output, accessing (e.g., accessing data in memory) and the like.Furthermore, “determining” may be regarded as “determining” resolving,selecting, choosing, establishing, comparing and the like. In otherwords, “determining” may be regarded as “determining” some operation.

The terms of “connected” and “coupled” used in the present Descriptionor any modifications thereof mean direct or indirect every connection orcoupling among two or more elements, and are capable of includingexistence of one or more intermediate elements between two mutually“connected” or “coupled” elements. Coupling or connection betweenelements may be physical, may be logical or may be combination there of.For example, “connection” may be read with “access”.

In the present Description, in the case where two elements areconnected, it is possible to consider that two elements are mutually“connected” or “coupled”, by using one or more electric wires, cableand/or print electric connection, and as some non-limited andnon-inclusive examples, electromagnetic energy having wavelengths in aradio frequency region, microwave region and/or light (both visible andinvisible) region, or the like.

In the present Description, the terms of “A and B are different” maymean that “A and B are different from each other”. The terms of“separate”, “coupled” and the like may be similarly interpreted.

In the case of using “including”, “comprising” and modifications thereofin the present Description or the scope of the claims, as in the term of“provided with”, these terms are intended to be inclusive. Further, theterm of “or” used in the present Description or the scope of the claimsis intended to be not exclusive OR.

As described above, the present invention is described in detail, but itis obvious to a person skilled in the art that the invention is notlimited to the Embodiment described in the present Description. Theinvention is capable of being carried into practice as modified andchanged aspects without departing from the subject matter and scope ofthe invention defined by the descriptions of the scope of the claims.Accordingly, the descriptions of the present Description are intendedfor illustrative explanation, and do not have any restrictive meaning tothe invention.

1.-6. (canceled)
 7. A terminal comprising: a processor that, when anuplink shared channel is used to transmit a delivery acknowledgementsignal (HARQ-ACK) and an uplink data (UL-SCH), controls a mapping of thedelivery acknowledgement signal based on whether bundling is applied tothe delivery acknowledgement signal and based on a number of bits of thedelivery acknowledgement signal; and a transmitter that transmits thedelivery acknowledgement signal and the uplink data.
 8. The terminalaccording to claim 7, wherein, when the bundling is applied, theprocessor maps the delivery acknowledgement signal to one of a firstresource and a second resource based on the number of bits of thedelivery acknowledgement signal after the bundling.
 9. The terminalaccording to claim 7, wherein the processor controls the mapping of thedelivery acknowledgement signal based on whether a plurality of codewords are scheduled by a single downlink control information.
 10. Theterminal according to claim 7, wherein, when the bundling is applied,the processor determines whether to apply puncturing or rate matching onthe uplink data based on the number of bits of the deliveryacknowledgment signal after the bundling.
 11. A radio communicationmethod comprising: when an uplink shared channel is used to transmit adelivery acknowledgement signal (HARQ-ACK) and an uplink data (UL-SCH),controlling a mapping of the delivery acknowledgement signal based onwhether bundling is applied to the delivery acknowledgement signal andbased on a number of bits of the delivery acknowledgement signal; andtransmitting the delivery acknowledgement signal and the uplink data.12. The terminal according to claim 8, wherein the processor controlsthe mapping of the delivery acknowledgement signal based on whether aplurality of code words are scheduled by a single downlink controlinformation.
 13. The terminal according to claim 8, wherein, when thebundling is applied, the processor determines whether to applypuncturing or rate matching on the uplink transport block based on thenumber of bits of the delivery acknowledgment signal after the bundling.14. The terminal according to claim 9, wherein, when the bundling isapplied, the processor determines whether to apply puncturing or ratematching on the uplink transport block based on the number of bits ofthe delivery acknowledgment signal after the bundling.
 15. A basestation comprising: a processor that, when an uplink shared channel isused to receive a delivery acknowledgement signal (HARQ-ACK) and anuplink data (UL-SCH), determines the delivery acknowledgement signalwhose mapping is controlled based on whether bundling is applied to thedelivery acknowledgement signal and based on a number of hits of thedelivery acknowledgement signal; and a receiver that receives thedelivery acknowledgement signal and the uplink data.